GoSub - Revision history

Laura: /* Syntax */

2014-05-05T14:38:11Z

Syntax

← Older revision		Revision as of 14:38, 5 May 2014
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	===Syntax===		===Syntax===
	GOSUB <line ref>		GOSUB <[[line ref]]>
	[[File:Gosub.png]]		[[File:Gosub.png]]

Laura: /* Syntax */

2014-04-24T17:58:00Z

Syntax

← Older revision		Revision as of 17:58, 24 April 2014
Line 11:		Line 11:

	===Syntax===		===Syntax===
			GOSUB <line ref>
	[[File:Gosub.png]]		[[File:Gosub.png]]

John: moved Gosub to GoSub over redirect

2014-02-26T15:32:13Z

moved Gosub to GoSub over redirect

← Older revision	Revision as of 15:32, 26 February 2014
(No difference)

Laura: /* Comments and Examples */

2013-07-16T20:21:11Z

Comments and Examples

← Older revision		Revision as of 20:21, 16 July 2013
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	GoSub is useful for transferring to and from computations or other subroutines that occur more than once in a program. In the following example, the program transfers to the subroutine that begins on line 900. If this particular line does not contain an executable statement, control is transferred to the next executable statement after line 900:		GoSub is useful for transferring to and from computations or other subroutines that occur more than once in a program. In the following example, the program transfers to the subroutine that begins on line 900. If this particular line does not contain an executable statement, control is transferred to the next executable statement after line 900:

	08450 GOSUB ~~900~~		08450 GOSUB 9000
	...		...
	~~00990~~ Return		09080 Return

	GoSub works in conjunction with the [[Return]] statement, which is required at the end of every subroutine. Return automatically transfers control back to the statement immediately following the corresponding GoSub. This occurs even when the next statement is in the middle of a multiple-statement line.		GoSub works in conjunction with the [[Return]] statement, which is required at the end of every subroutine. Return automatically transfers control back to the statement immediately following the corresponding GoSub. This occurs even when the next statement is in the middle of a multiple-statement line.

Laura: /* Comments and Examples */

2013-07-16T20:20:39Z

Comments and Examples

← Older revision		Revision as of 20:20, 16 July 2013
Line 5:		Line 5:

	08450 GOSUB 900		08450 GOSUB 900
			...
			00990 Return

	GoSub works in conjunction with the [[Return]] statement, which is required at the end of every subroutine. Return automatically transfers control back to the statement immediately following the corresponding GoSub. This occurs even when the next statement is in the middle of a multiple-statement line.		GoSub works in conjunction with the [[Return]] statement, which is required at the end of every subroutine. Return automatically transfers control back to the statement immediately following the corresponding GoSub. This occurs even when the next statement is in the middle of a multiple-statement line.

Laura: Created page with "The '''GoSub''' (GOS) statement transfers program control to a subroutine. The GoSub statement may no longer be executed from the command line. Error 1011 (Illegal imm..."

2013-01-18T21:25:17Z

Created page with "The '''GoSub''' (GOS) statement transfers program control to a subroutine. The GoSub statement may no longer be executed from the command line. Error 1011 (Illegal imm..."

New page

The '''GoSub''' (GOS) [[statement]] transfers program control to a subroutine. The GoSub statement may no longer be executed from the command line. Error [[1011]] (Illegal immediate statement) will occur if such usage is attempted.

===Comments and Examples===
GoSub is useful for transferring to and from computations or other subroutines that occur more than once in a program. In the following example, the program transfers to the subroutine that begins on line 900. If this particular line does not contain an executable statement, control is transferred to the next executable statement after line 900:

08450 GOSUB 900

GoSub works in conjunction with the [[Return]] statement, which is required at the end of every subroutine. Return automatically transfers control back to the statement immediately following the corresponding GoSub. This occurs even when the next statement is in the middle of a multiple-statement line.

===Syntax===
[[File:Gosub.png]]

===Parameters===
GoSub's only parameter, [[line-ref]], is required. It identifies the line number or label that begins the desired subroutine.

===Technical Considerations===
# Return information for the GoSub statement is kept in the [[FlowStack]]. (See [[BRConfig.sys]])
# See the [[On GoSub]] statement for a method of calling one of several subroutines depending on the value of a numeric expression.
# Active GoSubs may not be altered during program interruption.

<noinclude>
[[Category:Statements]]
[[Category:Branching Statements]]
</noinclude>